He is author of a number of publications, and is a regular newspaper columnist and broadcaster. He was elected Chairman of the Royal Institute of Philosophy in 2010.

He is also a popular communicator and broadcaster often engaging in controversial issues.

He has held a number of prestigious lectureships and fellowships at institutions including Georgetown University, Cambridge University and the Gregorian University in Rome. He has published some 200 academic papers covering areas such as the history of philosophy, philosophy of the mind, metaphysics, and moral and social philosophy.